2007-09-05 19:49:39 · 3 answers · asked by wjditv 1 in Science & Mathematics ➔ Physics
Just one. Otherwise they would call it an atoms bomb.
2007-09-05 20:41:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The fissionable part of a uranium bomb is about thirty pounds, or fourteen kilos, of uranium, and divide that by 235 to get the number of moles. Multiply that by 6E23 to get the number of uranium atoms. The Hiroshima bomb succeeded in fissioning about one kilogram of uranium (well under 10% of the amount present), which turned about one gram of matter into energy.
2007-09-05 19:55:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It isn't he number of atoms that count. It's the number of them that fission. And in a simple, 10 or 15 K-ton tactical nuke, that's around 10^20 or so.
Doug
2007-09-05 19:57:11 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋